Weighing-machine.



N0. 633,2l8. Patenfed Sept. I9, I899. r. n. RICHARDS.

WEIGHING MACHINE.

(Application filed Nov. 28, 1898.)

6 Sheets-Sheet I.

(No Model.)

Witnesses. wglmnimt g J THE seams Pzrzas ca, PHOTO-LITNO. wAsumsmw, u c

No. 633,2!8. Patented Sept. l9, I899. F. H.'R|CHARDS.

WEIGHING MACHINE.

(Application filed Nov; 28, 1898.)

'(No Model.) 6 Sheets-Sheet 2.

.Wiinasses Inventai No. 633,218. Patented Sept. I9, I899.

F. H. RICHARDS.

WEIGHING MACHINE.

\Application filed Nov. 28 1898.)

(No Model.) 6 Sheets-Sheet 3.

Witnesses. In ventmt w: norms warns 9a.. wnoroumou WASHINGTON, o. c.

No. 633,2l8.

Patented Sept. I9, I899. F. H. RICHARDS.

WEIGHING MACHINE.

(Application filed Nov. 28, 1898.) (NIL Model.)

6 Sheets-Sheet 4,

Witnesses.

' I Inven far.

THE mm; PETERS co, momurm. wmuxoron. n. c.

No. 633,2l8. Patented Sept. l9, I899. F. H. RICHARDS.

WEIGHING MACHINE.

[Application filed Nov. 28. 1898.)

(No Model.) 6 Sheets-Sheet 5.

' Fi J.

Witnesses. Inventor.

m: NORRIS PEYLRS co. PNOTQLITHQ, wnsrimsmm n. c.

No; 633,212. Patented Sept. l9, I899.

F. H. RICHARDS. I

WEIGHING MACHINE.

lApplication filed Nov. 28. 1898 (No Model.) 6 Sheets8heet 6.

Witnesses.

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UNITED STATES PATENT Gretna.

FRANCIS ll. RICHARDS, OF HARTFORD, CONNlCU'lICU'l.

WEIGHlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No 633,218, dated September19, 1899.

Applicationfiled November 28, 1898. Serial No. 697.632. kNo modem To allwhom it may concern/.-

Beit known that I, FRANCIS H. RICHARDS, a citizen of the United States,residingat Hartford, in the county of Hartford and State of Connecticut,have invented certain new and useful Improvements iniVeighing-lllachines, of which the following is a specification.

This invention relates to weighing-machines, and more particularly tothat class thereof designated as rising-poise weighing-machines.

An object of the invention is to provide a weighing-machine embodying animproved load-reducing instrumentality or means.

A further object of the invention is to provide a weighinginstrumentality or mechanism operative to weigh magnetizable orferruginous material and in connection therewith an improvedload-reducing means comprehending magnetic means adapted to reduce ordischarge such material by attraction, thereby to remove or withdraw thesame from. the weighing mechanism and reduce the load.

In the drawings accompanying and f0rming part of this specification,Figure l, which illustrates this invention byone'form of mechanism, is afront view of a weighing-machine constructed in accordance with thisinven tion, said view being partly in dotted lines. Fig. 2 is a top viewthereof, and Figs. 3, 4, 5, and 6 are left-hand side elevations withparts thereof in section, Figs. i and 6 having parts thereof broken awayto more clearly illustrate the operation of the machine, Fig. 3illustrating the overload-supply period, Fig. 4 the commencement of theload'reducing period, Fig. 5 a successive step during the load-reducingperiod, and Fig. 6 the load-discharging period succeeding theload-reduction and the obtainment of the true load determined by thepoising of the weighing or poising mechanism.

Similar characters designate like parts in all the figures of thedrawings.

As a preface to a further description of this improved rising-poiseweighing-machine it is to be understood that the various details hereinshown and described may be more or less varied without departure fromthe general scope of the invention. For instance,

various stream-controlling or load-discharging means may be adapted foruse in connection with the other mechanisms shown and described or withthe improved load-reducing means, since theinvention more particularlycomprehends a load-reducing device, instrumentalily, or means involvingthe use of electricity or a load-reducing means which is capable ofattracting or separating one part of the material from anotherpartthereof, thereby to reduce the load, or a load-reducing deviceadjustable toward and from the material. Furthermore, it will be seenthat the loadredncing means may be thrown into and out of action at anydesired stage in the operation of the machine by merely changing thetime of operation thereof, and hence theloadreducing means may operatesimultaneously with the whole or a part of the supply of material to theloadreceiver, if found desirableas, for instance, the amount ofreduction may be somewhat less than the amount of supply, so that agradual making up of the overload is obtained, or after a certainproportion of the material has been supplied to the receiver thereduction may be somewhat greater than the supply, whereby the load isgradually brought to a poise; but for the present purposes theload-reducing means will be described as operative after the overloadhas been completely supplied and the further supply to the weighingmechanism cut off.

In the present form of machine the streamcontrolling means, weighingmechanism, and load -discharging means, together with the subordinatemechanisms,(exceptingtheloadreducing means, and also excepting a somewhat different construction of load-receiver,) are substantially similarto my application heretofore filed September 9, 1898, Serial No.690,574, in which application the use of a blast is involved in theload-reducing means. As stated in said application, in all my priorrising-poise patents, including my first patent, No. 572,067, datedNovember 24, 1896, the overload or amount of material supplied to thereceiver has been usually reduced by means directly operative on thematerial and while in the receiver.

In the present instance, like the apparatus set forth in the applicationabove referred to,

the load-reducing means is effective. on the material after it has beencompletely transferred or discharged from the weighing mechanism or thereceiver thereof and while it is in a neutral space or region or a fieldof noninfluence, and is consequently without influence on such weighingmechanism. In my said case involving the use of a blast the loadreducingmeans is operative to force the ma terial from the load-receiver and isshown disposed at the inner side of the stream to accomplish thispurpose; but in the present instancein the form shown(whicl1,however,may be widely varied) the load-reducing means isoperative to attract or withdraw the material from the load-receiver andis shown disposed in the present form of machine at the outer side notonly of the receiver, but of the continuous stream.

The present construction of weighing-machine is particularly adapted forthe weighing of magnetizableorferruginous materialthat is, materialwhich can be attracted by magnetism, oneinstance of which isiron ore andin connection with such machine I have shown an improved loadreducingmeans adapted to separate, for the purpose of weighing, one portion ofthe material from another, and which load-reducing means in the presentform thereof is shown as a magnetic loadreducing means. I also desire tostate that the machine in some forms thereof could be used not only as aweighing-machine, but also as a material-separating machine, and hencecould be used not only to weigh material which is more or lessmagnetizable throughout, but also to separate that part of the materialwhich ismagnetizable or ferruginous from that portion thereof which isnon-magnetizable or non-ferruginous, so that during the process ofweighing the free and ready separation of the different ingredientscould be readily obtained, while the weight of the magnetizable materialcould be readily ascertained by a separate machine into which suchmaterial might flow or by the previous weighing of the material in bulk,whereby after the separation of the magnetizable ingredients the weightof the remainder could be ascertained, therebyindicating the weight ofthe separated magnetizable material.

This improved machine comprises in a general way in the form hereinshown and described and which may be considered its preferred form, ifdesired, weighing or poising mechanism comprising a load-receiver of anysuitable construction adapted for the purpose and counter-balancingmeans, overloadsupply means involving the use of streamcontrollingmeans, such as valve mechanism, and load-discharging means, inconnection with which mechanisms is em bodied this improved fornrofload-reducing means (designated in a general way by A) involving the useof electricity.

The framework forsupportingthe operative mechanisms may be of anysuitable character, but in the present instance it is shown comprisingabase 2, havingapair of uprights or side frames 3 and 1-, each of whichis shown in this instance as respectively comprising a pair of members 3and 3 and 1- and -11, and which side frames are united at their upperends by a top plate 5, shown carrying the material-supply means, such asa chute (J, of any suitable construction.

The weighing mechanism in the form shown comprises a suitableload-receiver 100 and counterbalancing means 150, substantially similarto that shown in many of my prior patents. This load-receiver in thepresent instance is maintained against undue lateral play or movement bya linkage connection with the hopper, and which connection is showncomprising a pair of arms 17, secured to the receiver and connected bypivoted links 18 with the hopper at the sides thereof. The receiver isprovided with a supplemental compartment, shown in the nature of ahopper, so that the receiver comprises a main compartmen t a and asupplemental compartment Z), one wall of the receiver being providedwith an opening 0, adjacent to and immediately below the discharge-mouthZ) of the supplemental compartment or hopper. This hopper is providedwith an apron or wall Z)", disposed in such position that a portion ofthe material during the supply thereof to the receiver will be separatedfrom the main compartment a and flow into said hopper i) and bedischarged therefrom at the mouth 7), preferably in a steady andcontinuous stream, and hence past said opening 0, which may be of anydesired area adapted for the pur pose for which it is designed; but inthe present instance the opening 0 is of sufficient area to permitof theready deflection of the stream from a continuous, depending, or verticalstream into an oblique or diverted stream, whereby it will be led orattracted from the inner side of said receiver to the outer side thereofby the improved load-red ucing means hereinafter described. For thepurpose of completely separating the material discharged from saidhopper from the main body of the material, thereby to permit it to passthrough a neutral space or field of non-influence, a conduit (Z is shownat one side of the load-receiver, the upper end of which preferablysurrounds or incloses the dischargemouth I) of the supplementalcompartment or hopper Z), the lower end thereof leadingto a pointadjacentto the main discharge-mouth of the load-receiver. The inner wall(6, together with the side walls of this conduit, thus forms a partitionbetween the main compartment and the outer wall of the load-rcceiver, sothat at that part of the receiver adjacent to the opening 0 thereofthere is formed a neutral space or field of non-influence 6, wherebywhen the material is within such held of non-influence and is passingthrough such space it is without influence on the weighing mechanism toeffect the movement thereof.

The load-receiver is provided with load-discharging mcans, shown in thepresent inseams :1

stance comprising a closer operative at the main discharge end of thereceiver. In the form shown this closer comprises a weighted oscillatorymember 8, pivotally secured to the load-receiver, suitable meansbeingprovided for maintaining the same shut or closed. This means in theform shown comprises a weighted catch or locker-arm 9, pivotally securedto one part of the load-receiver and having a catch-face 10 operative toengage an arm 8, carried by the closer 8, thereby to maintain saidclosershut. Themovement of this catch-arm is limited by a stop 13,disposed intermediate a pair of stop-arms 12 and 12, projecting from thehub of the catch-arm, whereby such closer-catch will be maintained inoperative position. This locker-arm 9 is also provided with an arm 14 inposition to be engaged by a weighted by-pass 15, carried by one of theside frame members, as 3, and maintained in operative position by a stop16. Then the receiver descends with its overload, the catch descendstherewith and carries its arm 14 into position below the bypass 15, Fig.at, whereupon when the receiver ascends to its poise position with itstrue load said arm 14 is in position to be engaged by such by-pass,whereby it will be oscillated, the closer released, and the discharge ofthe true load effected, such catch-arm 14 being released from the bypass15 when the receiver ascends to its normal position by the continuedupward movement of said receiver.

The stream-controlling means in the form shown comprises an oscillatoryvalve of any suitable construction, having its arms 21 pivotally securedone at each side of the supply-chute (l, and which supply-valve iscontrolled by the weighing mechanism through the medium of theload-receiver, and for this purpose said receiver is provided with apair of valve-operatingarms 22, one at each side of said receiver andoperative to engage a pair of projections 23, one carried by each ofsaid valve-arms 21. For the purpose of preventing the downward movementof the receiver until an overload is assured-that is to say, to preventthe weight of the valve which is in engagement with the operatingarms 22of the receiver-from forcing said leadreceiver down after a part of theload has been supplied and before an overload is assurech-suitable meansis provided, and in the present instance one of the valve-arms isprovided with a friction-roll 2a in position to engage a weighted camdevice 25 pivotally se cured to the supply-chute and maintained inposition by a suitable adjustable weight 26 and a stop 27. This camdevice is provided with two cam-surfaces 25 and 25, so that when theload-receiver is in its normal position and until a certain amount ofmaterial has been received thereby, usually an overload, the cam devicehas one of its surfaces 25" in engagement with the friction-10112 1 ofthe oscillatory arm of the valve, thereby to assist in maintaining thevalve open, whereby the weight of the valve is prevented from forcingthe load-receiver down prematurely and until an overload is assured.\Vhen the load-receiver descends with its overload, it carries itsvalveoperating arms 2 2 downward, whereupon the friction-roll 2a of thevalvearm operates to lift the weight of the cam device 25, which permitsthe valve gradually to cut off the load, at which time the cam-surface25" comes into engagement with the valve-arm and assists in maintainingthe valve closed. 011 the return movement of the load-receiver to itsnormal load-receiving position the valve is opened by the meanshereinbefore described, the friction-roll lifting the weighted camdevice 25', which is shifted into position to have its cam-face 25engage the valve-arm, as above set forth.

Since in this i mproved organization of meclr auism thestream-controlling means is controlled by the weighing mechanism on thedescent and ascent thereof, it follows that after the load-receiver hasreached its poise position with its true load and is commencing its maindischarge the tendency of the receiver is to return to itsload-receiving position, and thereby open the valve and permit anadditional stream of material to be supplied to the receiver at thistime, which will be added to the true load already obtained. Thereforeto prevent the opening of the valve, except at the proper predeterminedperiod, suitable means is provided, (designated herein as limitingmeans,) since it permits the free downward movement of the receiver andthe upward movement thereof to its poising position and also the returnof such receiver to its load-receiving position after the load has beencompletely discharged, but limits the upward movement thereof from itspoise to its load-receiving position, during which period the valve isopened until after the complete discharge of the true load. In thepresent structure this means, which is shown operative to lock thereceiver, and thereby the weighing mechanism against upward movementduring a predetermined period, and so prevent the opening of the valve,involves toggle mechanism comprising a toggle member 30 and a workingmember 31 cooperative therewith, one carried by the framework and theother by the receiver, and in the preferred construction this togglemember 30 comprises a pair of toggle-levers 30 and 80, pivotally securedto one of the side frame members, as a, and a weight 32, ,the movementof the weight in one direction being limited by a suitable stop 32'. Thelower end of one of the toggle-levers, as 30, is provided with alaterally-extending arm in operative engagement with the working member31, carried by the load-receiver. This member 31 is shown as abifurcated device, in the furcated part of which the toggle-arm 3-3 iscarried when the load-receiver is in its load-receiving position,whereby the toggle-levers are maintained in their position,substantially as shown in Fig.

IIO

4 ese,

o. On the descent of the load-receiver with an overload the bifurcatedmember 31 descends therewith, thereby permitting the weight 32 tooperate the toggle-levers and throw the same into alinement,substantially as shown in Fig. at, so that when the true load has beenpartially discharged and the receiver commences to move upward above theposition of poise the toggle-arm 33 engages the lower wall 31 of thebifurcated member 31, which thus acts as a stop and prevents suchmovement of the load-receiver, so that the opening of the valve isprevented. It will be understood, of course, that there is suflicientplay between the bifurcated member 31 and the toggle member 30, so asnot to interfere with the proper poising of the weighing mechanism. Topermit the load-receiver to return toits load-receiving position afterthe load has been completely discharged, suitable means is provided foroperating this toggle mechanism so as to unlock the load-receiver andpermit the ascent thereof, and in the present instance this meanscomprises a suitable catcharm 35, operatively connected to the closer,so that the toggle mechanism, which limits the movement of theload-receiver at one period, is in turn controlled by such load-receiverconstituting a part of the weighing or poising mechanism through themedium of its closer. This arm 35 is shown comprising a pair ofpivotally-conneeted members 35 and 35", one of which is maintained inposition relatively to the other by a suitable spring so. In operationwhen the load-receiver is in its leadreceiving position thelimiter-actuating arm 35 is substantially in the position indicated inFig. 3, while the toggle-levers and 30" are in their angular positions.011 the descent of the load-receiver with its load this arm is carrieddownwardly therewith, while the toggle-levers shift into alinemcnt, Fig.it, so that on the return of the load-receiver to its poising positionand on the opening of the closer such closer shifts this actuating-armpast the projection 33, carried by the toggle-levers, this beingpermitted owing to the pivotal conneetion between the members 35 and 35of such arm, the member 35 being returned to its normal position by thespring 36 after it has passed the toggle members. On the shutting of thecloser, the material maintaining it open until all appreciable amountthereof has been discharged, the actuating-arm is shifted upward,whereby it engages the projection 33 of the toggle-levers and forces thesame into theirangular position, substantially as shown in dotted linesin Fig. 3, thereby disengaging the same from the bifurcated member 31 ofthe load-receiver and permitting said receiver to ascend to its normalposition, during which movement it opens the supply-valve in the mannerabove set forth to permit a succeeding load to be received by theweighing mechanism.

As before stated, this weighing-machine involves an improvedload-reducing means operative to effect the reduction of the load attheproper predetermined period, thereby to secure a proper and true load bya rising poise, whereby the weighing mechanism is not affected by theimpact of the material supplied thereto or by the momentum of theoperating parts. To reduce the load, an improved means is providedsuitablysupported in position for this purpose. In the present instancethis means is shown involving electricity as the direct agency foreffecting the load reduction and which agency is shown intheinesentstructu re in magnetic form-such, for instance, as anelectromagnet of some suitable form and construction in position toeffect the desired result. In the structure shown this electron'iagnetis supported by the framework of the machine, and for this purpose aprojecting arm L0 is provided, shown herein in the form of a slideway,on which is secured a sliding bracket 41, carrying a magnet 42. Thisbracket 4-1 may be adjustably secured in position by some suitablemeans, but in the present form thereof is shown so secured in positionby screws By this means of support the magnet can be adjusted toward andfrom the material and the load-receiver whereby it can be disposed insuch position that it will exert sufficient power to attract or deflectthe stream flowing from the supplemental compartment or 110pper 7) fromits normal depending or vertical flow into an oblique or divergent flow,and hence through the opening 0 to the outside of the receiver 100,whereupon it will flow from the load-receiverinto the supplemental chutehereinafter described, but will not be of suflicient power to draw thematerial into contact with the magnet. This magnet is connected with asuitable battery 13 through the medium of a circuit-controller. In thepresent instance this circuit-controller comprises a device carried bythe weighing mechanism, shown herein carried by the load-receiver. Thisdevice is shown as a shiftable controller, such as arm 45, pivotallysecured at one end to the load-receiver, the opposite end of which isprovided with a binding-post 4c for one wire 47 of the circuit, andwhich wire t7 leads to the magnet. A suitable stop limits the swingingmovement of this arm. Fixedly secured to the framework (shown as theside frame member 3") is an arm L8, insulated from said side framemember by suitable insulating material -19, and which arm carries abinding-post 50 for the other wire 51 of the circuit, which wire 51leads to the battery I and from which battery a wire 52 leads to themagnet, whereby when the shiftable arm to is in contact with said fixedarm t8 the magnet will be energized or magnetized, and when said arm isout of contact, Fig. 3, the magnet will be demagnctized.

The operation of this improved weighingmaehine when constructedsubstantially in the manner shown and described is as follows: Thesupply-valve being open and the receiver in its normal load-receivingposition, the material is supplied to the load-receiver, the main partthereof entering the main compartment (it, while a part thereof flowsinto the supplemental hopper b, from which it flows in a continuousstream through the neutral region 6, from which point if its flow wasuninterrupted it would return to the load-receiver, so that such streamdoes not of itself reduce the load, since if left uninterrupted it wouldreturn to the load-receiver to again form a part of the overload. Afterthe overload has been secured the descent of the loadreceiver permitsthe supply-valve to cut off the supply of material to the receiver, saiddescent operating to carry the load-reducing controller 45 into contactwith the fixed arm 48, whereby a circuit is formed and the magnetmagnetized, whereupon the reduction of the load takes place. Thisreduction is accomplished by the magnetic action of the magnet, whichattracts the magnetizable or ferruginous material or ingredients duringits passage by the opening 0, thereby deflecting the same from theneutral space 6 and withdrawing it from the load-receiver and permittingit to be received by any suitable means, (shown herein as a conduit orreceptacle 55,) but which, however, may be a snit able reconveying meanssimilar, if desired, to that shown in my prior application, hereinbeforereferred to. When the reduction has been continued sufficiently long,the loadreceiver will rise to a poising position, there by carrying theshiftab'le controller 4-5 out of contact with the arm 48, whereby thecircuit is broken and the reduction ceases on the poising of the load.On the poising of the load-receiver with its true load the closer isopened in the manner hereinbefore set forth, the receiver, however,being limited against upward movement at this time by the action of theweighing-mechanism limiter hereinbefore described. After the load hasbeen completely discharged from the receiver the closer shuts, therebyoperating the arm into position to engage the limiter and actuate thesame to permit the receiver to continue its ascent to its normalposition to receive another load.

The load-reducing controller 45 is shown as oscillatory, so that whenthe load-receiver descends with its overload and until such receiverreaches its poise position such arm will be in contact with the fixedarm t8 and so maintain the magnet in working condition. The poising ofthe load therefore determines the reduction by breaking the circuit anddemagnetizing the magnet.

IVhile I have shown the load reducing means as involving the use ofelectricity, it is obvious that the application of electricity may alsobe used to facilitate the discharge of a load, especially in connectionwith sluggish material, when it is desired to hasten a discharge thereofby drawing the same from the load-receiver, although in the presentmachine and with the material shown it is deemed more desirable toeffect such discharge by gravity.

l'Iaving described my invention, I claim 1. In a rising-poiseweighing-machine, the combination of a weighing instrumentalityoperative to receive and weigh material; an agent; electrical means forenergizing said agent and thereby a portion of the material supplied tosaid weighing instrumentality, whereby said agent may act upon saidmaterial to reduce the load; and means for rendering the action of suchagent ineffective on the poising of the load.

2. The combination of a weighing instrumentality operative to receiveand weigh material; magnetic means operative to magnetize a part. of thematerial supplied to said weighing instrumentality wherebysaid means mayact upon such material to reduce the load; and means for rendering suchmagnetic means ineffective on the poising of the load.

In a machine of the class specified, the

combination of weighing mechanism operative to receive and weighlIlfliLGllttl,'6lGClJl'O- magnetic means operative to magnetize a partof the material supplied to said weighing instrumentality to reduce theload; and means for rendering such electromagnetic means ineffective onthe poising of the load.

at. In a rising-poise weighirig-machine, the combination of a weighinginst-rumentality operative to receive and weigh material; an agent;electrical means for energizing said agent and thereby a portion of thematerial supplied to said weighing instrumentality, whereby said agentmay act upon such material to reduce the load; and means for ren deringsaid electrical means operative at one period and inoperative atanother, period, whereby said agent is rendered ineffective on thepoising of the load.

5. The combination of a weighing instrumcntality operative to receiveand weigh material; magnetic means operativeto magnetize a part of thematerial supplied to said weighinginstrumentality, w-herebysaid meansmay act upon said material to reduce the load; and means for renderingsaid magnetic means effective at a predetermined period and forrenderingit ineffective on the poising of the load.

(3. In a machine of the class specified, the combination of weighingmechanism operative to receive and weigh material; electromagnetic meansopcrative to magnetizc a part of the material supplied to said weighinginstrumentalit-y, whereby said means may act upon such material toreduce the load; and means for rendering said electromagnetic meanseffective at a predetermined period and for rendering it ineffective onthe poising of the load.

7. In a rising-poise weighing-machine, the combination of a weighinginstrumentality operative to receive and weigh material; an agent;electrical means for-energizing said agent and thereby a portion of thematerial supplied to said weighing instrumentality, whereby said agentmay act upon such material to reduce the load; means for rendering theaction of such agent ineffectiv'e on the poising of the load; and meansfor limiting the return of such weighing instrtnnent'ality to its normalload-receiving position until the discharge of the poised load.

b. The combination of a weighing instrumentality operative to receiveand weigh material; magnetic means operative to magnetize a part of thematerial supplied to said weighing instru mentality, whereby said meansmay act upon such material to reduce the load; means for rendering suchmagnetic means ineffective on the poising of the load; and means forlimiting the return of said weighing instrun'ientality to its normalloadreceiving position until the discharge of the poised load.

t). In a rising-poise weighing-machine, the combination of a weighinginstrumentality operative to receive and weigh material; an agent;electrical means for energizing said agent and thereby a portion of thematerial supplied to said weighing instrumentality, whereby said agentmay act upon such material to reduce the load; and means for renderingsaid electrical means operative and controlled in its operation by apart of said machine.

10. In a rising-poise weighirig-machine, the combination of a weighinginstrumentality operative to receive and weigh material; magnetic meansoperative to magnetize a part of the material supplied to saidweighinginstrumentality whereby said means mayact upon such material toreduce the load; and means for rendering said magnetic means effectiveat one period, and for rendering it ineffective on the poising of theload and controlled in its operation by a part of said machine.

11. In a rising-poise weighing-machine, the combination of weighingmechanism operative to receive and weigh material; electromagnetic meansoperative to magnetize a part of the material supplied to said weighingmechanism, whereby said means may act upon such material to reduce theload; and means for rendering said electromagnetic means effective at apredetermined period and for rendering it ineffective on the poising ofthe load and controlled in its operation by a part of said weighingmechanism.

12. In a rising-poise weighing-machine, the combination of weighingmechanism having a load-receiver adapted to receive material andconstituting the field of influence and operative to transfer a portionof such mate rial from said field of in fluence into a field ofnon-influence, from whence its tendency is to pass again into said fieldof influence; an agent; electrical means for energizing said agent andthereby a portion of the material in said field of non-influence,whereby said agent may act upon the material in the field.

of non-influence and reduce the load; and means for rendering the actionof such agent ineffective 011 the poising of the load.

12 In a machine of the class specified, the combination, with weighingmechanism, of

overload-supply means, and an adjustable load-reducing means adjustabletoward and from the material thereby to insure a greater or lesseffective action on the material, and operative to reduce the overload.

14. In a rising-poise weighing-n'iachine, the combination of weighingmechanism having a load-receiver adapted to receive materialandconstituting the field of influence, and operative to pass a portionof said material from said field of influence into a field ofnon-influence, from whence its tendency is to pass again into said fieldof influence; magnetic means operative to magnetize a part of thematerial in the field of noninfluence, whereby said means may act uponthe material in said field of non-infl uence and reduce the load; andmeans for rendering such magnetic means ineffective on the poising ofthe load.

15. In a rising-poise weighing-machine, the combination of weighingmechanism having a load-receiver effective to transfer a portion of thematerial received thereby from one part thereof to another part thereofthrough a neutral region; electromagnetic means operative to magnetize apart of the material passing through said neutral region, whereby saidmeans may act upon such material to reduce the load; and means forrendering such electromagnetic means ineffective on the poising of theload.

16. In a rising-poise weighing-maehine, the combination of a weighinginstrumentality; overload-supply means; stream -controlling meanstherefor; magnetic means operative to magnetize a part of the materialsupplied to said weighing instru mentality whereby said means may act onsuch material toreduce the load; means for rendering such magnetic meansineffective on the poising of the load; and load-discharging means.

17. The combination of weighing mechanism; load-supply means therefor;adjustable load-reducing means adjustable with relation to the materialto be acted upon, and independently of the movement of the weighingmechanism, thereby to exert a greater or less effective action on saidmaterial, and operative to reduce the load supplied to said weighingmechanism; and load-discharging means.

18. The combination of weighing mechanism embodying a load-receiverhaving an opening at one side, a main load-receiving compartment, and asupplemental compartment terminating adjacent to said opening, andmagnetic means for withdrawing material during its passage from saidsupplemental compartment and by said receiver-opening.

1!). The combination of weighing mechanseams ism embodying aload-receiver having an opening at one side, a main load-receivingcompartment, a hopper terminating adjacent to said receiver-opening, aconduit communicating with said hopper and with said maincoinl'mrt'ment, and magnetic means for withdrawing material during itspassage from said hopperinto said conduit and bysaid receiveropening.

20. In a weighing-machine, the combination of weighing mechanismoperative to dis charge a part of the load and to again receive a partof such discharged load, and electromagnetic means operativeintern'iediate the discharge and reception of such material by saidweighing mechanism to reduce the discharge of such material thereby topermit a lesser amount of material to be received by the weighingmechanism than is discharged therefrom.

21. In a weighing-machine, the combination, with framework, of weighingmechanism supported thereby; overload-supply means; and load-reducingmeans supported on said framework for sliding adjustment and comprisingan electromagnet effective to magnet ize the material to be reduced.

22. In a Weighing-machine, the combination of weighing mechanism;overload-Suppl y means; and load-reducing means supported for slidingmovement and having a construction and operation whereby its adjustmentwill increase or lessen its effective action on the material to bereduced.

23. In a weighing-machine, the combination of weighing mechanism;overload-supply means; load-reducing means comprising an electromagneteffective to act directly on the material; and means carried by theweighing mechanism for controlling the operation of said load-reducingmeans.

24:. In a weighing-machine, the combination of weighing mechanismembodying a load-receiver; overload-supply means there for;load-reducing means comprising an electromagnet effective to actdirectly on the material; and means carried by theload-receiver forcontrolling said load-reducing means.

25. The combination, with framework, of weighing mechanism supportedthereby and embodying a load-receiver; overload-supply meansload-reducing means comprising an electromagnet mounted on saidframework; an electric circuit connected therewith, one end of which issecured to said framework; and means for making and breaking saidcircuit and comprising a controller carried by said load-receiver.

26. The combination, with framework, of weighing mechanism supportedthereby and embodying a load-receiver; overload-supply means;load-reducing meansv comprising an electromagnet mounted on saidframework; an electric circuit connected therewith, one end of which issecured to said framework; means for making and breaking said circuitand comprising a shift'able controller carried by said load-receiver andadapted to form contact with said framework; and loaddischarg ing means.

27. In a. weighing-machine, the combination, with framework, of weighingmechanism supported thereby; overload-s11pply means; and load-reducingmeans supported on said framework for sliding movement thereby to exerta greater or less effective action on the material.

28. The combination of weighing mechanism; load-supply means therefor;and adjustable load-reducing means free of rigid connection with saidweighing mechanism and effective to reduce the load supplied theretowithout the carriage of the material therefrom in a receptacle.

20. The combination of weighing mechanism embodying a loadreceiverhaving an opening at one side thereof, a hopper, and a conduit intowhich said hopper-opens; overload-supply means; load-reducing meansdisposed at the outer side of said receiver and adapted to act on thematerial discharged from said hopper into said conduit and, withoutcontact therewith, deflect the same through said receiver-openingthereby to reduce the load; and load-discharging means.

30. In a weighing-machine, the combination of weighing mechanismembodying a load-receiver having an opening at one side thereof, ahopper, and a conduit into which said hopper discharges; load-reducingmeans comprising an electromagnet operative to attract the materialdischarged from said hopper, thereby to withdraw the same through saidopening and reduce the load; and means for receiving the materialwithdrawn through said opening.

81.. In a weighil'ig-machine, the combination with ffftll'lGWOl'k, ofweighing mechanism supported thereby and embodying a loadreceiver havingan opening at one side thereof, a main compartment, a hopper, and aconduit communicating with said hopper and opening and with said maincompartment; overload-supply means; load-reducing means comprising anelectromagnet mounted on said framework and adjustable toward and fromsaid opening; a contact connected with a battery; a wire leading fromsaid battery to said electromagnet; a shiftable controller carried bysaid load-receiver; a wire connecting said controller with saidmagnetwhereby when said arm is in engagement with said contact theelectromagnet will be magnetized, and when out of engagement therewithwill be demagnetized; and load-discharge means.

In a weighing-machine, the combination, with weighing mechanismincluding a load-receiver effective to receive and weigh material, ofload-reducing means comprising an electromagnet, and means operative onthe movement of said receiver for energizing the magnet whereby saidmagnet will attract a part of the materialsupplied to said weighingmechanism and thereby reduce the load.

In a weighing-machine, the combination of a weighing instrumentality;load-supply means therefor; and load-reducing means comorising a magneteffective to magnetize and thereby reduce the load and having a slidingadjustment.

34-. In a weighing-maehine, the combination, with overload-supply means,of weighing mechanism having during the weighing of a load acontinuously-rimning stream of material; load-reduoingmeans comprisingan eleetromagnet; and means operative on the descent of said weighingmechanism forenergizing the magnet, whereby said magnet will act on saidrunning stream of material and attract the surplus constituting theoverload of said weighing mechanism.

In a weighing-machine, the combination, with weighing mechanism, ofoverloadsupply means therefor; load-reducing means comprising anelectromagnet; and means operative to throw said magnet into and out ofoperation, and operative during the descent of said weighing mechanismfor energizing the magnet, whereby said magnet will attract the surplusconstituting the overload of: said weighing mechanism.

FRANCIS II. RICHARDS.

\Vitnesses:

C. A. WEED, F. N. CHASE.

